Some downtown Sioux City commuters had to find a different route during the lunch hour, Thursday.
City crews placed an overhead sign along the I-29 frontage road around noon.
That forced the closure of the I-29 southbound exit ramp to Floyd Blvd.
It was only closed for about 20 minutes.
The exit ramp opened up again for traffic around 1 p.m.
Roosevelt was built in 1960 and has had four additions since then.
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